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AgriMetThe Pacific Northwest Cooperative
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Monthly Average Reference Evapotranspiration
Following are values of monthly average reference evapotranspiration (ETr) for each AgriMet station for the period of record. These ETr values are for the alfalfa reference crop (also known as "tall crop" reference). The ETr values were computed using the Kimberly-Penman 1982 procedure. Values during the winter months roughly approximate evaporation from bare (non-snow covered) wet soil, frozen or thawed. All of the AgriMet weather stations listed below are located in irrigated agricultural (or turfgrass) environments, and represent the ET conditions found in actively growing, irrigated cropland.These values were computed by summing the average daily ETr for the month. Note that the values for February are based on the non-leap year - 28 day month. Following the monthly values is a list of station names and the period of record used for computation of the monthly average ETr values.
Station Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Total ABEI 0.60 1.10 2.79 4.43 6.86 8.18 9.49 8.52 5.62 3.20 1.28 0.55 52.60 AFTY 0.43 0.82 2.03 3.51 5.33 6.81 8.21 6.85 4.35 2.41 0.82 0.37 41.95 AGKO 0.65 1.29 2.96 4.31 6.73 8.21 9.15 7.59 5.01 2.86 1.06 0.58 50.38 AHTI 0.53 1.08 2.39 3.97 6.41 7.84 8.84 8.17 5.76 3.23 1.10 0.49 49.82 ARAO 0.54 1.08 2.05 3.41 5.07 6.22 7.53 6.09 3.96 1.90 0.77 0.50 39.11 BANO 0.83 1.28 2.16 3.04 4.25 4.71 5.21 4.51 3.40 2.19 1.01 0.73 33.32 BATO 0.74 1.35 2.73 3.96 6.23 7.56 9.18 7.80 4.89 2.52 1.02 0.52 48.51 BEWO 0.67 1.12 2.72 3.67 5.55 7.08 8.47 6.53 4.17 2.31 0.94 0.57 43.79 BKVO 0.41 1.04 2.57 4.01 5.91 7.14 8.96 7.65 4.95 2.64 0.97 0.41 46.67 BOII 0.55 1.14 2.58 3.94 5.93 7.46 8.67 7.04 4.28 2.34 0.95 0.57 45.45 BRKO 1.12 1.64 2.52 3.30 4.68 5.07 4.58 3.99 3.78 2.75 1.33 1.00 35.76 CEDC 0.95 1.52 3.14 4.45 6.54 8.32 9.85 8.61 5.87 3.57 1.53 0.89 55.22 CHAW 0.18 CHVO 0.82 1.38 2.78 4.13 6.16 7.87 9.24 7.93 5.23 3.06 1.21 0.72 50.53 COVM 0.60 1.05 2.34 3.75 5.50 6.53 8.08 6.52 4.26 2.57 1.22 0.81 43.23 CRSM 0.34 0.75 1.81 3.39 5.27 5.97 7.66 6.53 3.85 1.85 0.62 0.33 38.37 CRVO 0.64 1.26 2.28 3.49 5.31 6.54 8.64 7.67 5.31 2.54 0.84 0.50 45.01 DEFO 0.31 0.92 2.26 3.47 5.46 7.01 8.60 6.86 4.10 1.84 0.59 0.28 41.69 DRLM 0.68 1.13 2.66 3.97 5.78 6.68 9.10 7.52 4.67 2.61 1.16 0.56 46.53 ECHO 0.66 1.22 2.83 4.62 7.01 9.07 11.40 9.66 5.98 3.08 1.10 0.60 57.23 EURN 1.00 1.47 3.47 4.82 7.22 9.55 10.24 8.89 6.02 3.88 1.83 0.95 59.35 FAFI 0.50 1.01 2.36 4.14 6.25 7.70 9.16 8.25 5.65 3.35 1.12 0.47 49.95 FALN 1.11 1.90 3.98 5.44 8.17 10.20 10.83 8.91 6.21 3.60 1.74 1.10 63.19 FOGO 0.46 1.05 2.07 3.24 5.17 6.37 7.93 6.85 4.55 2.14 0.72 0.41 40.96 FTHI 0.69 1.24 3.00 4.38 6.63 7.86 9.42 8.96 5.98 3.41 1.40 0.62 53.59 GDVI 0.79 1.45 3.27 4.69 7.05 9.00 10.59 8.80 5.63 3.28 1.37 0.70 56.62 GERW 0.44 1.10 2.67 4.36 6.66 8.11 9.53 7.77 5.03 2.64 0.93 0.40 49.63 GFRI 0.83 1.49 3.27 4.63 7.20 9.52 11.72 10.26 6.74 4.00 1.54 0.72 61.92 GOLW 0.43 1.04 2.47 3.99 6.38 8.18 10.13 8.71 5.52 2.65 0.78 0.40 50.68 HERO 0.70 1.34 3.08 4.83 7.24 9.08 11.12 9.61 6.03 3.24 1.16 0.58 58.00 HOXO 0.43 0.95 2.20 3.70 5.80 7.23 8.48 7.15 4.60 2.09 0.63 0.37 43.64 HRFO 0.42 0.95 2.39 3.73 5.65 7.22 8.99 7.50 4.56 2.38 0.84 0.37 44.99 HRHW 0.57 1.24 2.98 4.67 6.96 8.50 9.74 8.08 5.53 2.94 1.07 0.46 52.75 HRMO 0.57 1.22 2.87 4.56 7.05 9.09 11.14 9.30 5.82 2.98 0.99 0.52 56.10 IMBO 0.72 1.20 2.49 3.85 5.64 6.98 9.25 8.05 4.98 2.62 1.07 0.65 47.51 KFLO 0.70 1.37 2.77 4.05 6.55 8.31 9.20 7.66 5.27 2.95 1.13 0.64 50.59 KFLW 0.25 0.80 2.13 3.96 5.93 7.09 9.66 7.82 4.57 2.02 0.56 0.23 45.01 KTBI 0.42 0.95 2.72 4.52 7.25 8.67 10.64 9.63 6.27 3.59 1.28 0.43 56.36 LAKO 0.82 1.34 2.78 4.07 6.18 7.87 9.64 8.36 5.77 3.41 1.34 0.77 52.34 LEGW 0.74 1.31 3.06 4.89 7.15 8.68 9.91 8.52 5.49 2.89 1.13 0.60 54.39 LIDW 0.47 1.10 2.72 4.38 6.49 7.97 9.67 8.27 5.43 2.94 0.92 0.38 50.75 LORO 0.89 1.48 2.95 3.89 6.41 7.95 9.40 7.93 5.31 3.07 1.35 0.82 51.46 MALI 0.98 1.49 3.16 4.70 6.54 8.41 9.85 8.66 5.98 3.76 1.65 0.84 56.01 MASW 0.24 0.77 2.14 4.05 6.15 7.66 9.23 7.46 4.28 1.87 0.42 0.18 44.45 MDFO 0.64 1.27 2.40 3.73 5.84 7.64 9.15 7.68 5.13 2.63 0.91 0.52 47.52 MNTI 0.36 0.80 2.51 4.40 6.58 7.87 9.36 8.12 4.99 2.77 0.98 0.35 49.09 MRSO 0.78 1.27 2.79 4.20 6.22 8.00 9.81 8.68 5.86 3.10 1.20 0.63 52.53 NMPI 0.75 1.51 3.51 5.08 7.34 9.06 10.38 9.02 6.05 3.74 1.52 0.80 58.78 ODSW 0.42 1.08 2.71 4.42 6.57 8.21 10.33 9.12 5.99 3.17 0.92 0.39 53.33 OMAW 0.31 0.84 2.29 4.06 6.04 7.35 9.00 7.33 4.67 2.16 0.59 0.25 44.88 ONTO 0.53 1.22 3.09 4.87 7.42 9.04 10.85 9.33 6.08 3.43 1.20 0.60 57.66 PARO 0.40 0.96 2.19 3.60 5.42 6.85 8.33 6.89 4.37 2.01 0.64 0.33 41.98 PCYO 0.60 1.11 2.34 3.44 5.23 6.63 8.49 7.29 4.60 2.35 0.88 0.45 43.42 PICI 0.54 1.09 2.55 4.11 6.51 8.08 9.69 8.38 5.34 3.07 1.14 0.45 50.96 PMAI 0.63 1.29 3.16 4.90 7.18 8.55 9.79 8.29 5.49 3.21 1.25 0.67 54.41 PNGO 0.37 0.96 2.23 3.57 5.59 7.06 8.62 6.83 4.18 1.93 0.67 0.34 42.34 POBO 1.12 1.48 2.82 4.00 5.98 7.80 9.58 8.10 5.50 3.40 1.75 1.26 52.80 RDBM 0.35 0.78 1.97 3.42 5.18 5.93 7.53 6.02 3.56 1.76 0.58 0.34 37.44 RPTI 0.83 1.39 3.12 4.73 6.97 8.51 9.77 8.67 5.83 3.65 1.53 0.74 55.75 RXGI 0.45 0.94 2.50 4.20 6.33 7.50 8.49 7.97 5.16 2.98 1.02 0.44 47.97 SIGM 0.56 0.90 2.11 3.42 5.33 6.23 8.69 7.35 4.27 2.09 0.80 0.56 42.33 TWFI 0.92 1.48 3.23 4.65 7.04 8.73 10.05 8.61 5.98 3.74 1.54 0.79 56.76 WRDO 0.74 1.48 2.98 4.19 6.48 7.80 8.46 7.50 5.04 2.88 1.11 0.67 49.33 ABEI Aberdeen, Idaho AgriMet Station Begin:1991 End: 2007 AFTY Afton, Wyoming AgriMet Station Begin:1987 End: 2007 AGKO Agency Lake, Oregon AgriMet Station Begin:2000 End: 2007 AHTI Ashton, Idaho AgriMet Station Begin:1987 End: 2007 ARAO Aurora, Oregon AgriMet Station Begin:1998 End: 2007 BANO Bandon, Oregon AgriMet Station Begin:1985 End: 2007 BATO Beatty, Oregon AgriMet Station Begin:2004 End: 2007 BEWO Bend, Oregon AgriMet Station Begin:2003 End: 2007 BKVO Baker Valley, Oregon AgriMet Station Begin:2001 End: 2007 BOII Boise, Idaho AgriMet Station Begin:1995 End: 2007 BRKO Brookings, Oregon AgriMet Station Begin:1999 End: 2007 CEDC Cedarville, California AgriMet Station Begin:1985 End: 2007 CHAW Chamokane, Washington AgriMet Station Begin:2007 End: 2007 CHVO Christmas Valley, Oregon AgriMet Station Begin:1985 End: 2007 COVM Corvallis, Montana AgriMet Station Begin:1986 End: 2007 CRSM Creston, Montana AgriMet Station Begin:1988 End: 2007 CRVO Corvallis, Oregon AgriMet Station Begin:1990 End: 2007 DEFO Dee Flat, Oregon AgriMet Station Begin:2003 End: 2007 DRLM Deer Lodge, Montana AgriMet Station Begin:1998 End: 2007 ECHO Echo, Oregon AgriMet Station Begin:1988 End: 2007 EURN Eureka, Nevada AgriMet Station Begin:2001 End: 2007 FAFI Fairfield, Idaho AgriMet Station Begin:1987 End: 2007 FALN Fallon, Nevada AgriMet Station Begin:2001 End: 2007 FOGO Forest Grove, Oregon AgriMet Station Begin:1991 End: 2007 FTHI Fort Hall, Idaho AgriMet Station Begin:1993 End: 2007 GDVI Grand View, Idaho AgriMet Station Begin:1993 End: 2007 GERW George, Washington AgriMet Station Begin:1986 End: 2007 GFRI Glenns Ferry, Idaho AgriMet Station Begin:1993 End: 2007 GOLW GOLW Goldendale, Washington AgriMet Station Begin:1991 End: 2007 HERO Hermiston, Oregon AgriMet Station Begin:1983 End: 2007 HOXO Hood River, Oregon AgriMet Station Begin:1987 End: 2007 HRFO Hereford, Oregon AgriMet Station Begin:1998 End: 2007 HRHW Harrah, Washington AgriMet Station Begin:1987 End: 2007 HRMO Hermiston (Harec), Oregon AgriMet Station Begin:1993 End: 2007 IMBO Imbler, Oregon AgriMet Station Begin:1994 End: 2007 KFLO Klamath Falls, Oregon AgriMet Station Begin:1999 End: 2007 KFLW Kettle Falls, Washington AgriMet Station Begin:2002 End: 2007 KTBI Kettle Butte, Idaho AgriMet Station Begin:1996 End: 2007 LAKO Lakeview, Oregon AgriMet Station Begin:1988 End: 2007 LEGW Legrow, Washington AgriMet Station Begin:1986 End: 2007 LIDW Lind, Washington AgriMet Station Begin:1983 End: 2007 LORO LORO Lorella, Oregon AgriMet Station Begin:2001 End: 2007 MALI Malta, Idaho AgriMet Station Begin:1983 End: 2007 MASW Manson, Washington AgriMet Station Begin:1994 End: 2008 MDFO Medford, Oregon AgriMet Station Begin:1989 End: 2007 MNTI Monteview, Idaho AgriMet Station Begin:1996 End: 2007 MRSO Madras, Oregon AgriMet Station Begin:1984 End: 2007 NMPI Nampi, Idaho AgriMet Station Begin:1996 End: 2007 ODSW Odessa, Washington AgriMet Station Begin:1984 End: 2007 OMAW Omak, Washington AgriMet Station Begin:1989 End: 2007 ONTO Ontario, Oregon AgriMet Station Begin:1992 End: 2007 PARO Parkdale, Oregon AgriMet Station Begin:1998 End: 2007 PCYO Prairie City, Oregon AgriMet Station Begin:1989 End: 2007 PICI Picabo, Idaho AgriMet Station Begin:1993 End: 2007 PMAI Parma, Idaho Agrimet Station Begin:1986 End: 2007 PNGO Pine Grove, Oregon Agrimet Station Begin:2003 End: 2007 POBO Powell Butte, Oregon AgriMet Station Begin:1993 End: 2007 RDBM Roundbutte, Montana AgriMet Station Begin:1989 End: 2007 RPTI Rupert, Idaho AgriMet Station Begin:1988 End: 2007 RXGI Rexburg, Idaho AgriMet Station Begin:1987 End: 2007 SIGM St. Ignatius, Montana AgriMet Station Begin:1991 End: 2007 TWFI Twin Falls, Idaho AgriMet Station Begin:1990 End: 2007 WRDO Worden, Oregon AgriMet Station Begin:2000 End: 2007